#!/usr/bin/env ruby

require 'thread'

o = Thread.new {
  count = 0
  while count < 3 do
    puts "ohai from #{Process.pid}"
    sleep 1
    count = count + 1
  end
}

Thread.critical = true

# This does not work:
pid = system "sleep 2; echo done"

# This does work (output does not get interrupted):
#count = 0
#while count < 5 do
#  puts "wait!"
#  count = count + 1
#  sleep 2
#end

Thread.critical = false